Aviation Accident Summaries

Aviation Accident Summary DFW06CA058

Fort Worth, TX, USA

Aircraft #1

N225GH

Bell 206L-4

Analysis

The 11,500-hour helicopter flight instructor reported that he was instructing a 9,500-hour airline transport rated pilot at a private training runway (2,000-feet long by 75-feet wide asphalt runway). During a practice autorotation, the flight instructor stated that the helicopter experienced a hard landing as a result of low rotor RPM during touchdown. The flight instructor also reported that there were no abnormalities with the helicopter's flight controls, or engine at the time of the accident. The winds at the time of the accident were reported as light and variable. The density altitude was estimated at 750-feet mean sea level (MSL).

Factual Information

The 11,500-hour helicopter flight instructor reported he was instructing a 9,500-hour airline transport rated pilot at a private training runway (2,000-feet long by 75-feet wide asphalt runway). During a practice autorotation, the flight instructor stated that the helicopter experienced a hard landing as a result of low rotor RPM during touchdown. The flight instructor also reported there were no abnormalities with the helicopter's flight controls, or engine at the time of the accident. The winds at the time of the accident were reported as light and variable. The density altitude was estimated at 750-feet mean sea level (MSL).

Probable Cause and Findings

The flight instructors failure to maintain main rotor RPM and improper flare, which resulted in a hard landing.

 

Source: NTSB Aviation Accident Database

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